Appeal No. 2003-0269
Application No. 09/313,547
the device comprises first and second substrates (10,22) with a
layer of electro-optic material therebetween, and in order from
the surface of the respective substrate toward the layer of
electro-optic material, first and second electro-chemically
interactive layers (12,20), first and second barrier layers
(24,26) of a relatively non-reactive material, and first and
second orienting layers (14,18), wherein the first electro-
chemically interactive layer comprises a first layer of
electrically conductive material patterned to form an array of
reflective electrodes defining an array of pixel elements.
According to the appellants’ specification disclosure, the
barrier layers reduce or eliminate DC offset and associated
flicker which would otherwise arise due to an electro-chemical
interaction between the interactive layers and the orientation
layers when such devices are driven with an AC waveform (e.g.,
see the Abstract and the “OBJECTS AND SUMMARY OF THE INVENTION”
section of the appellants’ specification). This appealed subject
matter is adequately illustrated by independent claim 14 which
reads as follow:
14. An electro-optic image display device comprising a layer
of an electro-optic material between first and second substrates,
the first and second substrates supporting, on a respective side
of each respective substrate facing the layer of electro-optic
material, in order from the surface of the respective substrate
toward the layer of electro-optic material:
2
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